Chapter 12: Force Motion - Review and Practice

Which is not a force?

• friction

• gravity

• momentum

• weight

You push on a box and are unable to move it. What force opposes your push?

• static friction

• rolling friction

• sliding friction

• air resistance

Which of Newton's laws states that for every action force there is an equal and opposite reaction force.

• Newton's 1st law

• Newton's 2nd law

• Newton's 3rd law

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Newton's 1st law of motion is sometimes called the law of:

• inertia

• momentum

• conservation

• resistance

A change in which of the following affects the weight of an object?

• momentum

• velocity

• friction

• acceleration due to gravity

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Which equation represents Newton's 2nd law?

• $v\ =\ \frac{d}{t}$

• $a\ =\ \frac{F}{m}$

• $F\ =\ mv$

• $F\ =\ 0$

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An astronaut travels far away from Earth, her weight ____.

• decreases because gravity decreases

• increases because gravity increases

• decreases because her mass decreases

• remains the same because mass remains the same

Momentum depend upon ______.

• force only

• velocity and friction

• weight and mass

• mass and velocity

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What happens to an object when an unbalanced force acts on it?

• it accelerates

• mass changes

• stays constant

• friction

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Suppose two 4 Newton forces act on an object in the same direction. What is the net force on the object?

• 0 N

• 4 N

• 16 N

• 8 N

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